That's all I've heard also Dave - 151.085 and 151.13. I spend a lot of time listening and searching VHF/UHF bands and I've never heard the two you mentioned. By the way, Queen Anne's is one of the oddballs that doesn't use a PL tone on their freqs - just CSQ on both - the same as Talbot and Frederick Counties. I guess they never get interference from others using those freqs or they'd be PL'ing in a hurry.
Speaking of PL tones, anyone have the PL for Charles County's second VHF channel (155.085)? I haven't been able to catch it and I keep getting interference from Harford County Water Department which uses the same freq. Maybe they'll eventually get onto the trunked system once it gets going and leave the freq to Charles.